Vigorous, open-growing evergreen shrubs with large white funnel-shaped flowers in mid- to late spring. These are freely produced and sometimes fragrant. A rare and somewhat tender species in cultivation that should have good resistance to heat based upon its native range and habitat. Quite easy and vigorous if provided with excellent drainage. Native to Laos, Vietnam, Thailand and Guizhou, China where it occurs from 4,000 to 9,000 ft. in various habitats
1970/364 Kew (+15). Fragrant white flowers with yellow blotch.
1981/125 PGV#19:STRY:KOL (+25?\R2\6). Fragrant white flowers. Very rare maddenia. Requires excellent drainage.
1996/060 KR#2962:Millais (+15\R2\5). This new collection by Keith Rushforth in Vietnam seems to be more upright in growth than the old Thailand collections previously cultivated. Our first offering.
1998/010 KR#:Glendoick (+15\R2\5) Large and vigorous maddenia with large funnel-shaped white flowers. Collected by Keith Rushforth in Vietnam. Requires excellent drainage. Should be quite heat resistant.
Valder# This is a clone grown from seed collected wild in Vietnam(?), reported to have pink flowers. Our first offering of this selection from Peter Schick. (+15\R2\5) RSBG#2001/146
2001/152 Valder#19:Schick (+15\R2\5). This form is grown from seed collected wild at 4,000 ft. in Thailand. Rather rangy with large white flowers. Requires excellent drainage.
